Saw-gage.



7 PATBEWEB JULY 8, 1906.

A E. HALL.

SAW GAGE.

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PATENTED JULY 3, 1906.

A. H. HALLv SAW GAGE.

AIPLIOATIOK FILED DEB. 30, 1903.

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UNITED STATES PATEN T OFFICE.

Specification of Letters Eatent.

Patented July 3, 1906.

Application filed December 39, 1303. el-lei No; 187.217.

To all whom it m/Ltg concern:

Be it known that I, ALBERT H. EALL, a resident of Adrian, in the county of Lenawee and State of Michigan, have invented certain new and useful Improvements in Saw-Gages; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enab e others skilled in the art to which it apper tains to make and use the same.

My invention relates to an improved sawgage, an object of the invention bein to provide an improved saw-gage that wil be compact, light, strong, and sirn is in construction and one in which a l movable arts will be maintained in their true para l llelism and an llar ositions.

A further 0 ject is to provide an improved gage o erated entirely by hand and so shape t is framework as to dispense with all unnecessary metal, but give to the same the necessary strength and durability to withstand all the necessary Work to which it is subjected.

A still further object of my invention is to provide the raker gage-plate with a positive adjustable sto and a still further and prime object o my invention is the provision of means whereby the operator can quickly and accurately get the necessary edjustrnents to raker gage-plate to a minimum and can return to the same.

With these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts; as will be more fully hereinafter described, and pointed out in the claims.

In the accompan ing drawings, Figures 1 and Sara views in elhvation of o posits sides of my improvements. Fig. 3 1s a view in section through the center of the gage, Fig. 4 is a view in section on the line m w of Fig. 3, and Figs. 5, 6, 7, 8, and 9 are views illustrating various details of construction.

1 represents the main body or cast-metal frame made straight on one long edge, given a compound curvature at'its o posits long edge, and having the irregu ar contour shown at its ends. Along the straight edge at one side is a flange 2, having a severed or disconnected center, leavin an open space therein, and posts 3 project om this straight edge near its ends and in a direction opposite to the flange 2 and are so cast as to overlap the flange 2, made integral therewith, and add considerable strength thereto.

On the same side as posts 3, spaced therefrom and parallel with the straight edge, are flanges 4 on opposite sides of the central portion of the frame, and these flanges, together with the enlarged ends 5 of flanges 6 at the curved edge of the frame, afford a perfect bearing against the saw, and between the flanges 4 and 6 the metal of the frameis cut out at opposite sides of the center for light ness and to afford a ready grasp of the flange 6 in placing the tool in position on the saw and operatin the same.

The central solid and rigid portion 7 of the frame is made with angular lugs 8 on the same side as flanges 4 and 6, and these lugs enter an angular slot 9 in an adjustable clamping-bar 10 to hold the bar true, yet permit of its ready adjustment by a screw 13, passed through a threaded opening in the center of flange 6 and free end of said screw bearing against the end of bar 10. This screw 11 comprises an ordinary factoryscrew secured in an enlarged countersunk head 12, having roughened periphery to facilitate its operation, and a screw 13, similar in construction to screw 11, although larger, is passed through an opening let in the central portion 7 of the frame between lugs S and screwed into a threaded opening in'the rake-r agelate 15 and serves by reason of its en arge head to hold the bar 10 on the lugs 8 and in proper operative position and in addition clamps the raker ge eplate 15 in any position to which it may e ad'usted, as will be hereinafter explained.

he central portion F at the straight edge of frame l'has a cut-out portion 16, having its side Walls vertically parallel yet horizontally on a bevel. The outer or contracted end of bar 10 is shaped to fit cut-out portion 16 and is enlarged on both sides, forming a bearing-face 1?, extending from a lane in the cut-out portion 16 the desired istance outward to give to the bar a large bearing face to clamp a file between the same and posts 3, and by exerting suflicient pressure of screw 11 on her 10 the file can be curved to conform to the curvature of a saw.

The raker gage-plate 15, above referred to, is made with a head 19, having beveled end walls fitting the beveled side walls of the enlarged section of cut-out portion 16, and a slot 20 for the rece tion of the reker-teeth. The ga e-plate 15 as beveled or inclined side We s which fit a similarly-shaped recess or depression 22 in the central portion 7 on the side opposite to bar 10. The lower end of plate 15 is curved in an arc of a circle concentric with its opening for screw 13, and the end wall of recess or depression 22 is curved in the arc of a circle eccentric thereto for a purpose which will now be explained.

Between the frame 1 and gage-plate 15 a thin metal plate 23 is located and made with a circular opening, wherebysaid plate is ivotally supported on the screw 13. The p ate 23 is provided with a pointer 24, bent out wardly from the plate to form a shoulder 24, to be disposed between the lower curved end of the gage-plate and the curved bottom face of the recess 22. Beyond the shoulder 24 the pointer is bent at right angles over the frame 1 to register with a scale thereon. When the pointer is at the extreme right, the gage-plate will be in its extreme osition spaced the greatest distance from ange 2, and as the pointer is moved to the left the shoulder 24", moving between the adjacent eccentric faces formed by the bottom of recess 22 and the lower end of the gage-plate, will cause the latter to move longitudinally by the wed ing of said shoulder between said eccentric aces in uniform proportion, as indicated by the scale, and when. the proper adjustment has been secured the screw 18 will be operated to firmly clamp the gage-plate in such position.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a saw-gage, the combination with a frame, of a raker gage-plate, a scale on the frame, and a pointer registering with said scale means cooperating with the pointer and gage-plate to adjust the latter, when the pointer is moved, substantially as set forth. 2. In a saw-gage, the combination with a frame, of a raker gage-plate, a scale on said frame, a pointer registering with said scale, means cooperating with the pointer and gageplate to adjust the latter when the pointer is moved, and means for securing said gagelate at any adjustment, substantially as set orth. 3. In a saw-gage, the combination with a frame, of a raker gage-plate, a scale on said frame, a pointer registering with said scale, means cooperating with the pointer and gage-plate to adjust the latter when the pointer is moved, and a set-screw adapted to clamp the gage-plate at any adjustment, substantially as set forth.

4. In a saw-gage, the combination with a frame provided with a curved. face and a longitudinallymovable gageplate havin a curved end face eccentric to the curved ace on the frame, and a pointer having a part movable between said eccentric faces to move the gage-plate longitudinally.

5. In a gage-plate, the combination with a frame having a recess or depression therein, of a Taker gage-plate mounted in said recess or depression, a clamping set-screw assed through the frame and into the gage-p ate, a pointer having a hole through which said screw freely passes, said pointer projecting between the end of the gage-plate and recess, the lower end of the gage-plate and recess curved in arcs of difierent circles, whereby a movement of the pointer between them will adjust the gage-plate.

6. In a sawgage, the combination with a frame, of a gage-plate at one side of the frame, means for guiding said plate, lugs projecting from the other side of the frame, a file-clamping bar having an elongated slot to receive said lugs, abutments on the frame over the file-clamping bar, a screw assing freely through said elongated slot and frame and entering a threaded hole in the gageplate, said screw having a head bearing against said lugs, and a screw passing u wardly through a hole in the bottom of t e frame and engaging the lower end of the fileclamping bar.

7. A saw-gage, comprising a metal frame having a straight edge, a flange on one side thereof, a raker gage-plate on the same side and posts projecting outward from the opposite side o the strai ht edge, of a clampingbar having an angu ar slot therein, angular lugs on the frame to enter the slot and hold the bar in correct angular position, a setscrew to adjust the bar longitudinally, and a set-screw havin a head disposed parallel with the bar to old the latter on the lugs, said set-screw entering the gage-plate and holding it in any position to which it may be moved.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ALBERT H. HALL.

Witnesses:

WALTER S. WESTERMAN, DAVID A. HIoKs. 

